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Please send me an e-mail informing =
me
ofcontext in which you used =
this
New York Times article on the application of physics. Thanks! Dr Cise

<=
/o:p>

DETROIT — Toyota, struggling to eliminate questions surrounding
millions of its vehicles, announced a repair on Monday to stop gas pedals from possibly
sticking and causing cars to speed up unexpectedly.

betwe

INTRODUCTION: Consider the spring force (F) =
always
to be 2 lb. That force creates a positive torque with a lever

allow =
this
break peddle to return to its normal idleposition? (b) Say the normal f=
orce
as shown above is 4 lb.

Find t=
he
coefficient of friction between the pedal assembly and the spring assem=
bly
with the frictional force found in (a)? (c) The normal force is reduced=
to
3 lb between the ridges and grooves (where friction is) with the insert=
ed
steel wedge bar under spring(as shown above). Now, with this reduced no=
rmal
force to 3 lb, find the

net
torqueon accelerator ped=
al?
(d) In (c) will this reduction in normal force cause the break pedal to
return

The solution
involves installing a steel reinforcement bar in the pedal assemblies of
2.3millionvehicles in the United States.Toyota has said it will provide replacement pedals to more =
than
five million buyers whose cars were recalled over floor mats that could jam=
the
accelerator. The
company said last fall that floor mats were the lone cause of=
the
problemThe recalled models have pedals and sensors m=
ade
by the CTS
Corporation, a supplier in Elkhart, Ind., that differed slightly
from parts made for Toyota by Denso, a Japanese supplier. None of the vehic=
les
with the Denso version were recalled.